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Table 2
Solar energetic particle events recorded onboard STB from 2007–2012.
| LET-B 6–10 MeV protons | SEPT-B 55–85 keV electrons | ||||||
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| No. | Date | Onset | Peak | Peak | Onset | Peak | Peak |
| time | time | value | time | time | value | ||
| (UT) | (UT) | (cm-2 s-1 sr-1 MeV-1) | (UT) | (UT) | (cm-2 s-1 sr-1 MeV-1) | ||
|
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| 0 | 2007 May 19 | 16:45 | 23:45 | 2.25E-02 | 13:54 | 18:45 | 7.18E+02 |
| 1 | 2007 May 23 | 10:25 | 3:45 (144 DOY) | 1.32E-02 | 8:12 | 13:15 | 6.63E+02 |
| 2 | 2008 Nov. 4 | – | – | – | 4:10 | 5:55 | 2.77E+02 |
| 3 | 2009 Dec. 22 | 6:50 | 15:00 | 1.75E-02 | 5:19 | 6:16 | 8.92E+02 |
| 4 | 2010 Jan. 17 | 14:40 | 6:44 (DOY 18) | 4.90E-03 | 4:58 | 17:55 | 3.01E+01 |
| 5 | 2010 Feb. 6 | 9:20 | 16:00 | 1.70E-03 | 0:48 | 1:06 | 9.57E+01 |
| 6 | 2010 Feb. 7 | 4:00 | 8:10 | 9.40E-03 | 3:05 | 4:36 | 9.55E+03 |
| 7 | 2010 Feb. 12 | 10:10 | 20:30 | 2.68E-02 | 12:15 | 14:15 | 1.61E+04 |
| 8 | 2010 Mar. 14 | 3:00 | 9:10 | 1.30E-03 | 0:15 | 1:16 | 1.20E+02 |
| 9 | 2010 Aug. 1 | – | 10:30 (DOY 214) | 1.64E+01 | – | – | – |
| 10 | 2010 Aug. 7 | 20:30 | 2:00 (DOY 220) | 2.21E+00 | 19:08 | 1:15 | 3.96E+03 |
| 11 | 2010 Aug. 14 | 12:40 | 18:40 | 2.35E-01 | 10:31 | 11:36 | 2.70E+03 |
| 12 | 2010 Aug. 18 | 9:40 | 13:20 | 1.16E-01 | 6:53 | 10:36 | 1.20E+03 |
| 13 | 2010 Sep. 9 | 3:20 | 10:50 | 1.12E-02 | – | – | – |
| 14 | 2010 Nov. 11 | 8:50 | 22:10 | 5.70E-03 | 7:43 | 7:55 | 1.48E+02 |
| 15 | 2011 Jan. 13 | 15:00 | 13:00 (DOY 14) | 5.70E-03 | 13:23 | 16:53 | 3.48E+01 |
| 16 | 2011 Jan. 21 | 4:50 | 8:00 | 3.50E-02 | 4:47 | 4:55 | 1.64E+02 |
| 17 | 2011 Feb. 12 | 0:50 | 3:20 | 1.50E-03 | 22:38 | 0:45 | 5.39E+01 |
| 18 | 2011 Feb. 13 | 20:00 | 0:30 (DOY 45) | 1.52E-01 | 18:08 | 19:25 | 7.30E+02 |
| 19 | 2011 Feb. 15 | 4:00 | 9:10 | 1.59E+00 | 2:38 | 4:35 | 1.64E+04 |
| 20 | 2011 Mar. 7 | 16:50 | 7:00 (DOY 67) | 3.86E+01 | 15:25 | 23:25 | 2.38E+04 |
| 21 | 2011 Mar. 21 | 20:00 | 4:40 (DOY 81) | 5.68E-02 | 18:43 | 18:55 | 9.12E+03 |
| 22 | 2011 Mar. 24 | 20:40 | 23:30 (DOY 84) | 2.74E-02 | 17:36 | 18:15 | 1.42E+04 |
| 23 | 2011 Mar. 30 | 4:20 | 6:30 (DOY 90) | 3.39E+00 | 2:25 | 14:05 | 6.38E+02 |
| 24 | 2011 Apr. 19 | 10:10 | 22:10 | 3.80E-03 | 12:05 | 21:05 | 1.15E+02 |
| 25 | 2011 Apr. 20 | 9:50 | 19:30 | 2.19E-02 | 9:58 | 11:15 | 2.52E+02 |
| 26 | 2011 Apr. 27 | 18:20 | 3:10 (DOY 118) | 1.11E-02 | – | – | – |
| 27 | 2011 May 9 | 23:50 | 11:30 (DOY 130) | 1.15E+00 | 22:23 | 3:25 | 2.94E+02 |
| 28 | 2011 May 29 | 16:10 | – | – | 14:05 | 20:35 | 7.53E+03 |
| 29 | 2011 Jun. 14 | 19:10 | 8:50 (DOY 166) | 2.04E+01 | 15:56 | 9:15 | 3.87E+04 |
| 30 | 2011 Jul. 11 | 13:40 | 14:10 (DOY 193) | 3.50E-03 | 12:15 | 13:45 | 1.41E+02 |
| 31 | 2011 Jul. 26 | 15:30 | 21:50 | 7.60E-03 | 16:35 | 22:55 | 1.71E+02 |
| 32 | 2011 Aug. 2 | 14:50 | 3:00 (DOY 215) | 5.90E-03 | 10:25 | 15:55 | 1.22E+02 |
| 33 | 2011 Aug. 3 | 17:00 | 12:50 (DOY 218) | 3.60E-02 | 8:35 | 8:55 | 1.78E+02 |
| 34 | 2011 Sep. 6 | 7:50 | 16:20 (DOY 251) | 2.23E-02 | 4:15 | 6:25 | 2.00E+02 |
| 35 | 2011 Sep. 22 | 11:50 | 3:50 (DOY 267) | 7.05E+02 | 10:58 | 5:15 | 3.66E+05 |
| 36 | 2011 Oct. 4 | 10:40 | 2:10 (DOY 278) | 4.65E+00 | 13:30 | 15:45 | 4.84E+04 |
| 37 | 2011 Oct. 8 | 1:30 | 17:50 (DOY 281) | 5.27E-01 | 19:15 | 4:15 | 2.13E+03 |
| 38 | 2011 Oct. 16 | 9:10 | 12:20 (DOY 290) | 2.14E-01 | 9:35 | 9:15 | 3.73E+03 |
| 39 | 2011 Oct. 22 | 19:10 | 23:00 | 1.98E-02 | 19:15 | 20:35 | 1.95E+02 |
| 40 | 2011 Nov. 4 | 0:50 | 20:20 | 3.97E-01 | 23:24 | 1:05 | 4.25E+03 |
| 41 | 2011 Nov. 9 | 16:10 | 1:50 (DOY 314) | 6.24E-01 | 13:49 | 15:25 | 1.79E+03 |
| 42 | 2011 Nov. 14 | 3:50 | 9:50 | 6.80E-02 | – | – | – |
| 43 | 2011 Nov. 17 | 3:10 | 10:00 (DOY 322) | 1.67E+00 | – | – | – |
| 44 | 2011 Nov. 26 | 9:30 | 15:50 (DOY 331) | 1.55E-01 | 8:15 | 12:35 | 4.92E+02 |
| 45 | 2011 Dec. 1 | 7:30 | 2:40 (DOY 336) | 3.88E-02 | 6:45 | 8:05 | 2.52E+02 |
| 46 | 2011 Dec. 9 | 22:50 | 15:30 (DOY 344) | 1.30E-02 | 22:55 | 5:15 | 1.15E+02 |
| 47 | 2011 Dec. 20 | 7:30 | 10:20 | 3.00E-03 | 18:15 | 19:15 | 2.19E+02 |
| 48 | 2011 Dec. 25 | 17:10 | 5:10 (DOY 360) | 5.97E-02 | 18:55 | 23:25 | 3.95E+03 |
| 49 | 2011 Dec. 27 | 9:00 | 10:40 | 4.87E-02 | 5:35 | 9:55 | 3.19E+03 |
| 50 | 2012 Jan. 5 | 11:30 | 8:50 (DOY 8) | 1.40E-03 | 13:05 | 14:05 | 5.82E+01 |
| 51 | 2012 Jan. 12 | 10:50 | 17:30 | 1.74E-02 | 1:15 | 1:45 | 5.24E+02 |
| 52 | 2012 Jan. 16 | 9:00 | 9:00 (DOY 17) | 1.36E+00 | 6:25 | 12:55 | 1.38E+03 |
| 53 | 2012 Jan. 19 | 19:10 | 17:30 (DOY 20) | 1.32E+01 | 17:15 | 6:45 | 7.87E+03 |
| 54 | 2012 Jan. 23 | 6:30 | 10:50 | 1.32E+01 | 6:15 | 14:35 | 1.89E+04 |
| 55 | 2012 Jan. 31 | 2:00 | 7:50 | 7.97E-01 | 1:34 | 6:55 | 6.13E+03 |
| 56 | 2012 Feb. 3 | 10:10 | 8:10 (DOY 35) | 1.44E+00 | – | – | – |
| 57 | 2012 Feb. 24 | 20:40 | 7:40 (DOY 57) | 2.06E-02 | 16:10 | 22:50 | 5.26E+02 |
| 58 | 2012 Mar. 3 | 23:20 | 9:20 (DOY 64) | 5.67E-01 | 20:35 | 4:55 | 2.78E+03 |
| No | Date | Onset | Peak | Peak | Onset | Peak | Peak |
| 59 | 2012 Mar. 4 | 16:00 | 23:40 | 4.22E+01 | 12:25 | 2:05 | 1.10E+05 |
| 60 | 2012 Mar. 7 | 2:40 | 7:00 (DOY 68) | 3.36E+02 | 1:15 | 4:55 | 6.63E+05 |
| 61 | 2012 Mar. 18 | 16:50 | 17:10 | 5.77E-01 | – | – | – |
| 62 | 2012 Mar. 24 | 8:50 | 4:50 (DOY 86) | 3.66E+00 | 1:10 | 1:25 | 4.74E+03 |
| 63 | 2012 Mar. 27 | 5:20 | 21:30 (DOY 88) | 9.19E+01 | – | – | – |
| 64 | 2012 Apr. 8 | 9:13 | 0:00 (DOY 100) | 1.48E-02 | 21:45 | 11:45 | 8.70E+01 |
| 65 | 2012 Apr. 10 | 4:00 | 6:10 | 3.17E-02 | – | – | – |
| 66 | 2012 Apr. 11 | 1:20 | 19:10 | 3.75E-02 | – | – | – |
| 67 | 2012 Apr. 15 | 4:40 | 15:50 | 1.37E-01 | 2:38 | 5:25 | 1.33E+03 |
| 68 | 2012 Apr. 16 | 22:30 | 21:30 (DOY 108) | 2.68E-01 | 17:58 | 19:05 | 1.79E+03 |
| 69 | 2012 Apr. 24 | 10:20 | 0:40 (DOY 116) | 1.75E-01 | 8:33 | 10:05 | 1.25E+03 |
| 70 | 2012 May 3 | 18:50 | 22:50 | 1.90E-03 | – | – | – |
| 71 | 2012 May 8 | 0:50 | 3:20 | 1.90E-03 | – | – | – |
| 72 | 2012 May 10 | 1:20 | 4:10 (DOY 131) | 3.40E-03 | 21:45 | 4:05 | 7.80E+02 |
| 73 | 2012 May 12 | 1:20 | 2:10 | 4.30E-03 | – | – | – |
| 74 | 2012 May 17 | 5:00 | 21:30 (DOY 139) | 9.10E-03 | 3:25 | 16:55 | 9.43E+01 |
| 75 | 2012 May 21 | 2:30 | 22:10 (DOY 145) | 1.44E-02 | 7:30 | 4:30 | 3.29E+02 |
| 76 | 2012 May 25 | 4:10 | 22:50 | 3.39E-02 | – | – | – |
| 77 | 2012 May 27 | 18:10 | 10:40 (DOY 150) | 1.36E-01 | 7:55 | 10:45 | 1.70E+03 |
| 78 | 2012 Jun. 3 | 20:40 | 2:00 (DOY 156) | 1.83E-01 | 18:39 | 19:55 | 3.28E+03 |
| 79 | 2012 Jun. 6 | 23:30 | 5:40 (DOY 159) | 7.83E-03 | 20:43 | 21:25 | 6.20E+02 |
| 80 | 2012 Jun. 12 | 21:30 | 3:00 (DOY 167) | 7.51E-02 | 16:00 | 23:30 | 9.31E+02 |
| 81 | 2012 Jun. 22 | 10:50 | 13:00 | 1.70E-03 | – | – | – |
| 82 | 2012 Jun. 25 | 16:10 | 4:10 (DOY 178) | 3.20E-03 | – | – | – |
| 83 | 2012 Jun. 27 | 14:10 | 15:00 | 1.47E-02 | 12:57 | 13:05 | 4.55E+03 |
| 84 | 2012 Jun. 28 | 19:10 | 4:30 (DOY 181) | 9.52E-02 | 2:36 | 3:35 | 1.65E+03 |
| 85 | 2012 Jul. 2 | 22:10 | 2:50 (DOY 186) | 9.02E+00 | 21:03 | 21:35 | 2.14E+03 |
| 86 | 2012 Jul. 12 | 18:10 | 1:30 (DOY 195) | 2.49E+00 | 17:10 | 21:05 | 1.25E+04 |
| 87 | 2012 Jul. 23 | 22:10 | 5:40 (DOY 209) | 9.86E+00 | 18:05 | 21:35 | 4.92E+04 |
| 88 | 2012 Aug. 4 | 17:10 | 2:30 (DOY 218) | 1.21E+00 | 15:28 | 18:05 | 3.55E+03 |
| 89 | 2012 Aug. 13 | 16:40 | 2:50 (DOY 227) | 4.00E-03 | 4:40 | 5:45 | 9.62E+02 |
| 90 | 2012 Aug. 18 | 21:30 | 4:50 (DOY 232) | 4.80E-03 | – | – | – |
| 91 | 2012 Aug. 20 | 12:50 | 14:40 | 1.79E-02 | 13:55 | 14:45 | 8.99E+02 |
| 92 | 2012 Aug. 22 | 23:00 | 23:30 (DOY 236) | 1.86E+00 | 3:15 | 1:45 | 1.35E+04 |
| 93 | 2012 Aug. 31 | 21:30 | 4:10 (DOY 246) | 2.23E+02 | 20:11 | 21:55 | 2.20E+05 |
| 94 | 2012 Sep. 20 | 4:50 | 0:00 (DOY 267) | 6.45E+01 | 15:15 | 1:45 | 3.31E+05 |
| 95 | 2012 Sep. 28 | 6:00 | 7:50 | 3.35E+00 | 0:38 | 2:25 | 1.75E+04 |
| 96 | 2012 Oct. 1 | 10:10 | 16:30 (DOY 276) | 1.52E-01 | 11:00 | 10:50 | 2.89E+03 |
| 97 | 2012 Oct. 8 | 19:50 | 18:00 (DOY 283) | 2.44E-01 | 14:58 | 19:45 | 3.09E+03 |
| 98 | 2012 Oct. 14 | 5:40 | 14:00 | 5.92E-02 | 3:10 | 4:50 | 2.34E+02 |
| 99 | 2012 Oct. 22 | 9:50 | 12:50 (DOY 297) | 7.70E-03 | 1:50 | 16:50 | 2.02E+02 |
| 100 | 2012 Oct. 26 | 16:10 | 3:50 (DOY 301) | 1.84E-02 | 12:33 | 13:25 | 8.84E+02 |
| 101 | 2012 Nov. 8 | 4:50 | 15:50 (DOY 314) | 1.06E-01 | 3:13 | 8:05 | 4.10E+02 |
| 102 | 2012 Nov. 17 | – | 22:40 (DOY 323) | 2.31E-01 | – | – | – |
| 103 | 2012 Nov. 21 | 17:00 | 17:50 | 2.15E-02 | 16:03 | 17:05 | 5.71E+02 |
| 104 | 2012 Nov. 24 | 10:10 | 17:20 | 3.80E-03 | 15:53 | 16:15 | 4.88E+02 |
| 105 | 2012 Nov. 27 | 8:40 | 13:30 (DOY 333) | 5.48E-02 | 5:25 | 10:25 | 1.81E+02 |
| 106 | 2012 Dec. 5 | 4:00 | 10:20 (DOY 340) | 1.21E-01 | 0:46 | 2:05 | 3.48E+02 |
| 107 | 2012 Dec. 25 | 7:50 | 13:30 | 3.20E-03 | 2:55 | 9:25 | 3.07E+02 |
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